The existence and uniqueness of nonnegative solution for a class of age-structured SEIR epidemic model;

通过初等方法，证明了此冗余系统非负解的存在唯一性。

youdao

The existence and uniqueness of nonnegative solution for a class of age-structured SEIR epidemic model;

通过初等方法，证明了此冗余系统非负解的存在唯一性。

youdao